Add Persian (Farsi) language pack and fix RTL layout direction

DS4Windows/App.xaml

@@ -12,6 +12,9 @@
 
             <!--<SolidColorBrush x:Key="ForegroundColor" Color="{x:Static SystemColors.ActiveCaptionTextColor}" />-->
 
+            <!-- Live-updatable layout direction, set from code (App.xaml.cs -> SetUICulture) based on the selected language -->
+            <FlowDirection x:Key="AppFlowDirection">LeftToRight</FlowDirection>
+
             <Style TargetType="{x:Type Button}" x:Key="NoBGHoverBtn">
                 <Setter Property="Background" Value="Transparent" />
                 <Setter Property="Template">

DS4Windows/App.xaml.cs

@@ -86,6 +86,14 @@ public struct COPYDATASTRUCT
 
         private void Application_Startup(object sender, StartupEventArgs e)
         {
+            // Flip only each window's *content* to match the selected culture's reading direction,
+            // never the Window object itself -- setting FlowDirection on the Window would also mirror
+            // the native window chrome (min/max/close button side) and any image/icon inside, which we
+            // don't want. The actual direction value is kept in the "AppFlowDirection" resource and
+            // updated from SetUICulture whenever the language changes.
+            EventManager.RegisterClassHandler(typeof(Window), FrameworkElement.LoadedEvent,
+                new RoutedEventHandler(SyncWindowContentFlowDirection));
+
             runShutdown = true;
             skipSave = true;
 
@@ -677,6 +685,15 @@ public void WriteIPCResultDataMMF(string dataStr)
             }
         }
 
+        private void SyncWindowContentFlowDirection(object sender, RoutedEventArgs e)
+        {
+            if (sender is Window window && window.Content is FrameworkElement rootContent &&
+                Application.Current.Resources["AppFlowDirection"] is FlowDirection dir)
+            {
+                rootContent.FlowDirection = dir;
+            }
+        }
+
         private void SetUICulture(string culture)
         {
             try
@@ -691,6 +708,13 @@ private void SetUICulture(string culture)
                 //DS4WinWPF.Properties.Resources.Culture = ci;
                 Thread.CurrentThread.CurrentCulture = ci;
                 Thread.CurrentThread.CurrentUICulture = ci;
+
+                // Match content layout direction to the selected culture (RTL for fa/ar/he, etc.).
+                // Stored as a resource that SyncWindowContentFlowDirection reads whenever a window
+                // loads, and applied only to each window's Content -- never the Window object itself,
+                // so native window chrome (min/max/close button side) and images stay unaffected.
+                Application.Current.Resources["AppFlowDirection"] =
+                    ci.TextInfo.IsRightToLeft ? FlowDirection.RightToLeft : FlowDirection.LeftToRight;
             }
             catch (CultureNotFoundException) { /* Skip setting culture that we cannot set */ }
         }

DS4Windows/DS4Control/ControlService.cs

@@ -1708,15 +1708,15 @@ public bool Start(bool showlog = true)
                 string logMessage = string.Empty;
                 if (!vigemInstalled)
                 {
-                    logMessage = "ViGEmBus is not installed";
+                    logMessage = DS4WinWPF.Translations.Strings.ViGEmBusNotInstalled;
                 }
                 else if (!Global.IsRunningSupportedViGEmBus())
                 {
-                    logMessage = string.Format("Unsupported ViGEmBus found ({0}). Please install at least ViGEmBus 1.17.333.0", Global.vigembusVersion);
+                    logMessage = string.Format(DS4WinWPF.Translations.Strings.ViGEmBusUnsupportedVersion, Global.vigembusVersion);
                 }
                 else
                 {
-                    logMessage = "Could not connect to ViGEmBus. Please check the status of the System device in Device Manager and if Visual C++ 2017 Redistributable is installed.";
+                    logMessage = DS4WinWPF.Translations.Strings.ViGEmBusConnectFailed;
                 }
 
                 LogDebug(logMessage);

DS4Windows/DS4Forms/LanguagePackControl.xaml

@@ -12,7 +12,7 @@
              d:DesignHeight="30" d:DesignWidth="340">
     <StackPanel Orientation="Horizontal">
         <Label x:Name="label1" Content="{lex:Loc LangPackControl.UseLangPack}" ContentStringFormat="{}{0}:" />
-        <ComboBox x:Name="cbCulture" Width="200" Margin="10,0,0,0"
+        <ComboBox x:Name="cbCulture" Width="200" Margin="10,0,0,0" FlowDirection="LeftToRight"
                   ItemsSource="{Binding LangPackList}" SelectedIndex="{Binding SelectedIndex,FallbackValue=0}" IsEnabled="False">
             <ComboBox.ItemTemplate>
                 <DataTemplate>

DS4Windows/DS4Forms/PresetOptionWindow.xaml

@@ -10,7 +10,7 @@
         lex:ResxLocalizationProvider.DefaultAssembly="DS4Windows"
         lex:ResxLocalizationProvider.DefaultDictionary="Strings"
         mc:Ignorable="d"
-        Title="Select Preset" Height="250" Width="600" Padding="0"
+        Title="{lex:Loc PresetOptWin.WinTitle}" Height="250" Width="600" Padding="0"
         Style="{DynamicResource WindowStyle}" Closed="Window_Closed">
     <Window.Resources>
         <BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/>
@@ -20,8 +20,8 @@
             <TabItem x:Name="IntroTab" Header="{lex:Loc Intro}">
                 <DockPanel Margin="4,0,4,8">
                     <StackPanel Orientation="Horizontal" DockPanel.Dock="Bottom" HorizontalAlignment="Right">
-                        <Button x:Name="noPresetBtn" Content="No" MinWidth="60" Margin="0,0,20,0" TabIndex="0" Click="NoPresetBtn_Click" />
-                        <Button x:Name="yesPresetBtn" Content="Yes" MinWidth="60" TabIndex="1" Click="YesPresetBtn_Click" />
+                        <Button x:Name="noPresetBtn" Content="{lex:Loc No}" MinWidth="60" Margin="0,0,20,0" TabIndex="0" Click="NoPresetBtn_Click" />
+                        <Button x:Name="yesPresetBtn" Content="{lex:Loc Yes}" MinWidth="60" TabIndex="1" Click="YesPresetBtn_Click" />
                     </StackPanel>
                     <StackPanel>
                         <TextBlock Text="{lex:Loc PresetIntrotext}" TextWrapping="Wrap" />

DS4Windows/DS4Forms/UpdaterWindow.xaml

@@ -13,14 +13,14 @@
         Title="{lex:Loc UpdaterWin.WinTitle}" Height="450" Width="800"
         Style="{DynamicResource WindowStyle}" Closed="Window_Closed">
     <DockPanel Margin="8,0">
-        <TextBlock x:Name="captionTextBlock" Text="{Binding IntroText}" DockPanel.Dock="Top" Margin="0,4" />
+        <TextBlock x:Name="captionTextBlock" Text="{Binding IntroText}" DockPanel.Dock="Top" Margin="0,4" FlowDirection="LeftToRight" />
         <StackPanel Orientation="Horizontal" DockPanel.Dock="Bottom" HorizontalAlignment="Right" Margin="0,0,0,8">
             <Button x:Name="skipVersionBtn" Content="{lex:Loc SkipVersion}" MinWidth="80" Click="SkipVersionBtn_Click" />
             <Button x:Name="yesBtn" Content="{lex:Loc Yes}" MinWidth="60" Click="YesBtn_Click" Margin="10,0,0,0" />
             <Button x:Name="noBtn" Content="{lex:Loc No}" MinWidth="60" Click="NoBtn_Click" Margin="10,0,0,0" />
         </StackPanel>
 
         <mdxam:MarkdownScrollViewer Margin="0,8" Markdown="{Binding Markdown}"
-                                    ClickAction="OpenBrowser" MarkdownStyle="{StaticResource DocumentStyleGithubLike}" />
+                                    ClickAction="OpenBrowser" MarkdownStyle="{StaticResource DocumentStyleGithubLike}" FlowDirection="LeftToRight" />
     </DockPanel>
 </Window>

DS4Windows/DS4Forms/WelcomeDialog.xaml

@@ -48,7 +48,7 @@
                         <Run Text="{lex:Loc Welcome.BluetoothSettings}" />
                     </Hyperlink>
                 </TextBlock>
-                <Image Source="{Binding Source={StaticResource resourcePaths}, Path=PairmodePNG}" Height="80" DockPanel.Dock="Top" />
+                <Image Source="{Binding Source={StaticResource resourcePaths}, Path=PairmodePNG}" Height="80" DockPanel.Dock="Top" FlowDirection="LeftToRight" />
             </DockPanel>
 
             <StackPanel x:Name="step4HidHidePanel" DockPanel.Dock="Top" Margin="0,8,0,0">
@@ -69,7 +69,7 @@
                 </TextBlock>
             </StackPanel>
 
-            <Button x:Name="finishedBtn" Content="Finished" HorizontalAlignment="Center" Padding="10,1" Style="{StaticResource CommonMargin}" Click="FinishedBtn_Click" DockPanel.Dock="Bottom" />
+            <Button x:Name="finishedBtn" Content="{lex:Loc Finished}" HorizontalAlignment="Center" Padding="10,1" Style="{StaticResource CommonMargin}" Click="FinishedBtn_Click" DockPanel.Dock="Bottom" />
         </DockPanel>
     </ScrollViewer>
 </Window>

DS4Windows/Translations/Strings.ar.resx

@@ -428,7 +428,7 @@ Gryo معين كفأرة</value>
     <value>ملفات التعريف</value>
   </data>
   <data name="NoControllersConnected" xml:space="preserve">
-    <value>(لا توجد أيادي تحكم متصلة (الأقصى {0}</value>
+    <value>لا توجد أيادي تحكم متصلة (الأقصى {0})</value>
   </data>
   <data name="FlickThreshold" xml:space="preserve">
     <value>بداية النقرة</value>